Difluoroboron Curcumin Complex: A Study on Determination of Acidity Constants and Quantitative Analysis of Arsenic(III)
In this study, the complex of difluoroboron curcumin (BF2-Cur) has been synthesized and characterized via the combination of Boron trifluoride-diethyl etherate ((C2H5)2OBF3) and curcumin. However, the new dissociation constants, pKa1 and pKa2 of the BF2-Cur complex, have been indicted by the v...
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| Những tác giả chính: | , , , , , |
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| Định dạng: | Journal article |
| Ngôn ngữ: | English |
| Được phát hành: |
Indonesia
2022
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| Những chủ đề: | |
| Truy cập trực tuyến: | http://scholar.dlu.edu.vn/handle/123456789/760 |
| Các nhãn: |
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| Thư viện lưu trữ: | Thư viện Trường Đại học Đà Lạt |
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| Tóm tắt: | In this study, the complex of difluoroboron curcumin (BF2-Cur) has been
synthesized and characterized via the combination of Boron trifluoride-diethyl etherate
((C2H5)2OBF3) and curcumin. However, the new dissociation constants, pKa1 and pKa2 of
the BF2-Cur complex, have been indicted by the values of 8.44 ± 0.16 and 9.76 ± 0.13,
respectively. On the other hand, the reagent was also used to determine As(III) in aqueous
solutions by UV–Vis spectrophotometry. As a result, the method was validated for
accuracy, precision, linearity, and sensitivity, and the linear range was from 1.0 to 25.0
µmol/L, with the linear regression, A = 0.0027 C + 0.0106, correlation coefficient R2 =
0.9969. Besides, the limit of detection (LoD) and limit of quantification (LoQ) were
determined as 0.83 and 2.10 µmol/L, respectively. Thus, the developed method is
successfully used for quantitative analysis of total arsenic in wastewater by reducing
As(V) to As(III), then determining As(III) with high accuracy results. |
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